import net.coobird.thumbnailator.Thumbnails;
import org.springframework.core.io.ResourceLoader;

import java.io.File;
import java.io.IOException;
import java.util.regex.Pattern;

/**
 * Created by jiangzeyin on 2017/7/11.
 */
public class img {
    public static void main(String[] a) throws IOException {
        //ResourceLoader
        System.out.println(Pattern.matches("^[0-9a-zA-Z_]+$", "sdfsadf_sd_fsdaf343"));
    }


}
